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supports

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The supports method tests if this DOM implementation supports a particular feature.

Syntax

boolean = element.supports(feature[, version])
 

Parameters

feature is a string that contains the name of the feature (e.g., "")

version is a string containing the version number of the feature.

Example

if ( document.supports("package", "4.0") ) {     // do something that only package 4.0 allows }

Notes

If version is not supplied, the method returns true is any version of the specified feature is supported.

Specification

Not part of the specification.